@book{wuqi, 
author ="吴麒", 
year="2010", 
title="自动控制原理(第2版)", 
publisher="清华大学出版社"
}
@book{bianweihui, 
author ="《现代应用数学手册》编委会", 
year="2005", 
title="现代应用数学手册:计算与数值分析卷", 
publisher="清华大学出版社"
}
@book{zheng, 
author ="郑大钟", 
year="2002", 
title="线性系统理论(第2版)", 
publisher="清华大学出版社"
}
@BOOK{CalculusofVariations,
  author =       {Daniel Liberzon},
  title =        {Calculus of Variations and Optimal Control Theory},
  publisher =    {Princeton University Press},
  year =         {2012}
}

